package com.kiell.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.kiell.common.utils.R;
import com.kiell.gulimall.product.entity.SkuImagesEntity;
import com.kiell.gulimall.product.entity.SpuInfoDescEntity;
import com.kiell.gulimall.product.feign.SeckillFeignService;
import com.kiell.gulimall.product.service.*;
import com.kiell.gulimall.product.vo.SeckillSkuVo;
import com.kiell.gulimall.product.vo.SkuItemSaleAttrVo;
import com.kiell.gulimall.product.vo.SkuItemVo;
import com.kiell.gulimall.product.vo.SpuItemAttrGroupVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.kiell.common.utils.PageUtils;
import com.kiell.common.utils.Query;

import com.kiell.gulimall.product.dao.SkuInfoDao;
import com.kiell.gulimall.product.entity.SkuInfoEntity;

import javax.annotation.Resource;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Resource
    private SkuImagesService skuImagesService;

    @Resource
    private SpuInfoDescService spuInfoDescService;

    @Resource
    private AttrGroupService attrGroupService;

    @Resource
    private SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    private ThreadPoolExecutor executor;

    @Autowired
    private SeckillFeignService seckillFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * @param skuInfoEntity
     */
    @Override
    public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
        this.baseMapper.insert(skuInfoEntity);
    }

    /**
     * @param params
     * @return
     */
    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SkuInfoEntity> wrapper = new QueryWrapper<>();
        //构造复杂查询条件
        /**
         * {
         * sidx: 'id',//排序字段
         * order: 'asc/desc',//排序方式
         * key: '华为',//检索关键字
         * catelogId: 0,
         * brandId: 0,
         * min: 0,
         * max: 0
         * }
         */
        String key = String.valueOf(params.get("key"));
        if (!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("sku_id",key).or().like("sku_name",key);
            });
        }
        String catelogId = (String)params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }
        String brandId = (String)params.get("brandId");
        if (!StringUtils.isEmpty(brandId)  && !"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        String min = (String)params.get("min");
        if (!StringUtils.isEmpty(min)){
            //ge大于=
            wrapper.ge("price",min);
        }
        String max = (String)params.get("max");
        if (!StringUtils.isEmpty(max)){
            //le小于=
            try {
                BigDecimal bigDecimal = new BigDecimal(max);
                if (  bigDecimal.compareTo(new BigDecimal("0")) == 1){
                    //le小于=
                    wrapper.le("price",max);
                }
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    /**
     * @param spuId
     * @return
     */
    @Override
    public List<SkuInfoEntity> getSkuBySpuId(Long spuId) {
        List<SkuInfoEntity> list = this.list(new QueryWrapper<SkuInfoEntity>()
                                                     .eq("spu_id",spuId));
        return list;
    }

    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
        SkuItemVo skuItemVo = new SkuItemVo();

        //异步编排优化
        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(() -> {
            //1、sku基本信息的获取  pms_sku_info
            SkuInfoEntity info = this.getById(skuId);
            skuItemVo.setInfo(info);
            System.out.println("infoFuture is done");
            return info;
        }, executor);

        // thenAcceptAsync关注上一步返回结果，自己没有返回结果
        CompletableFuture<Void> attrFuture = infoFuture.thenAcceptAsync(res->{
            //3、获取spu的销售属性组合
            List<SkuItemSaleAttrVo> saleAttrVos = skuSaleAttrValueService.getSaleAttrBySpuId(res.getSpuId());
            skuItemVo.setSaleAttr(saleAttrVos);
            System.out.println("attrFuture is done");
        },executor);

        CompletableFuture<Void> descFuture =infoFuture.thenAcceptAsync(res->{
            //4、获取spu的介绍
            SpuInfoDescEntity spuInfo = spuInfoDescService.getById(res.getSpuId());
            skuItemVo.setDesc(spuInfo);
            System.out.println("descFuture is done");
        },executor);

        CompletableFuture<Void> baseAttrFuture = infoFuture.thenAcceptAsync(res->{
            //5、获取spu的规格参数信息
            List<SpuItemAttrGroupVo> groupVos = attrGroupService.getAttrGroupWithAttrsBySpuId(res.getSpuId(),res.getCatalogId());
            skuItemVo.setGroupAttrs(groupVos);
            System.out.println("baseAttrFuture is done");
        },executor);

        CompletableFuture<Void> imageFuture = CompletableFuture.runAsync(() -> {
            //2、sku的图片信息    pms_sku_images
            List<SkuImagesEntity> images = skuImagesService.getImagesBySkuId(skuId);
            skuItemVo.setImages(images);
            System.out.println("imageFuture is done");
        }, executor);

        CompletableFuture<Void> seckillFuture = CompletableFuture.runAsync(() -> {
            //3、远程调用查询当前sku是否参与秒杀优惠活动
            R skuSeckilInfo = seckillFeignService.getSkuSeckilInfo(skuId);
            if (skuSeckilInfo.getCode() == 0) {
                //查询成功
                SeckillSkuVo seckilInfoData = skuSeckilInfo.getData("data", new TypeReference<SeckillSkuVo>() {
                });
                skuItemVo.setSeckillSkuVo(seckilInfoData);

                if (seckilInfoData != null) {
                    long currentTime = System.currentTimeMillis();
                    if (currentTime > seckilInfoData.getEndTime()) {
                        skuItemVo.setSeckillSkuVo(null);
                    }
                }
            }
        }, executor);

        //等待所有任务都完成
        CompletableFuture.allOf(infoFuture, attrFuture, descFuture, baseAttrFuture, imageFuture,seckillFuture).get();
        System.out.println("all is done");

        return skuItemVo;
    }


}